[Aya]

@Zara I use DHA in my surfactant based system however I have never noticed a scent maybe because I keep my face as far as possible from it given how many times it spilt on my hand and cause irritation. With that being said I formulate home care products so I use essential oils as my fragrance . I use capryly/capryl glucoside to solubilise the oils.  So no preservative smell at all. Also a little off here but I have noticed with DHA is only ever effective at ph below 6 , below 5.5 is even better and I’ve tested it loads of times.

[Aya]

@ketchito thank you . My ph is indeed low its below 5.5 because in the past I’ve noticed ph 6 and above would cause microbiological growth after a couple of weeks. Maybe I can swap out the preservative for one that is compatible with a higher ph and incorporate the non ionic thickener I’m really grateful for this response. Thanks again .